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Originally posted by thugugly
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Hi JohnStone, Thank you that was a lot of help.
Let's see if I understand this;
Pulsed DC act's like AC in a transformer at resonance
Yes, pulses are being transformed but not only by winding ratio but additionally by current change speed - especially switch off speed
, which I assume i'm getting by adjusting freq and duty,
duty less than corresponding 20 KHz ( .5 ms) required
i used four series neons to tune for brightness, i measured with freq counter around 9 khz, i wasn't sure, but sounds right now, thanks.
seems right. My experience is that best firing is if we ignite and then increase gap or reduce voltage as long as sparks do not stop. Then we get that firing at neg. voltage near the lowest voltage - similar to TDC at car engine
1. If I use 12 v input, and two car coils in paralell at res, not anti-paralell, my output could be 2000 v ac, 9 khz, max.
if anti-parralell, 4000 v at 9-18 khz.
depends on how you operate them. They usually have ratio of 1:100.
- If you give them a regular frequency they will perform like a transformer with lower voltage.
- If operated with square wave near 50% duty they will give additional peaks of higher voltage.
- As pulse transformer they give a lot of more voltage (min. 10KV) if you load them with 6-10A max per pulse and sudden stop. I've seen American makes with an output up to 40 KV. Usually you can not load them this way within 0.5 ms. So it helps if you get a transitor type (built for resistor operation) but you operatem them without resistor. Additionally you can increase the voltage to about 24V.
- Others charge a capacitor up to 400V (primaries stand that) and shoot by a thyristor to primary. That's real pulse technology and you get extremely high and sharp pulses.
I feel that not the highest voltage is important but if they do it this way you have very steep edges and that seems to be of invaluable.
These are basic hints only. Play with this parameters in order to transfer knowledge into your intuition.
2. My cap should be rated at 2000-4000 v, and a capacitance which should be low maybe .1 to 1 nf. This will not be the tuning cap value because its before the spark so i will need another cap (variable), to tune coil after spark, or will it go to natural res since after spark.
right.
- follow the different hints in this forum to tesla coilers. You need to tune your cap so in order to you get a spark every pulse out of your car coil.
- Another way was shown by Zilano. You rectify your HV and connect it through a resistor to your primary cap before spark gap. See Tesla coiler links for proper tuning with inductor instead resistor. But resistor is recommended for initial tinkering.
We have pelenty of building stones and plenty of useful combinations. Therefore we have no distinct instruction for just ONE replication.
Nobody knows all essential parameters and therefore most replications don't work. See recent discussion regarding conditioned capacitors. How many replications were totally correct - but did'n wait for conditioning?
I've got a 16 ga. 2 inch B & W coil, 10 turns per inch, 10 inch long, for my primary, about 57 ft. I was going to try to step down at res, using 10 ga. wire at 1/4 primary, wind my L2's at ends of L1 but opposite ( 2 coils, 10 ft each) . I see mr clean used uneven number turns for his secondaries.
Again: many building stones and many combinations.
I decided for Zilano three coil setup (still under construction). This is because we have in the middle a coil with many windings and as high voltage as you like while components at primary and last secondary are loaded with moderate voltage only. But I do not garantee not to change my mind. Experiments will decide.
Please take my hints as knowledge you have to explore. There are so many different parameters involved (some unknown). All components behave as community and not as individuals only. You need to get good friends with all of them.
Thanks
Thug
Let's see if I understand this;
Pulsed DC act's like AC in a transformer at resonance
Yes, pulses are being transformed but not only by winding ratio but additionally by current change speed - especially switch off speed
, which I assume i'm getting by adjusting freq and duty,
duty less than corresponding 20 KHz ( .5 ms) required
i used four series neons to tune for brightness, i measured with freq counter around 9 khz, i wasn't sure, but sounds right now, thanks.
seems right. My experience is that best firing is if we ignite and then increase gap or reduce voltage as long as sparks do not stop. Then we get that firing at neg. voltage near the lowest voltage - similar to TDC at car engine
1. If I use 12 v input, and two car coils in paralell at res, not anti-paralell, my output could be 2000 v ac, 9 khz, max.
if anti-parralell, 4000 v at 9-18 khz.
depends on how you operate them. They usually have ratio of 1:100.
- If you give them a regular frequency they will perform like a transformer with lower voltage.
- If operated with square wave near 50% duty they will give additional peaks of higher voltage.
- As pulse transformer they give a lot of more voltage (min. 10KV) if you load them with 6-10A max per pulse and sudden stop. I've seen American makes with an output up to 40 KV. Usually you can not load them this way within 0.5 ms. So it helps if you get a transitor type (built for resistor operation) but you operatem them without resistor. Additionally you can increase the voltage to about 24V.
- Others charge a capacitor up to 400V (primaries stand that) and shoot by a thyristor to primary. That's real pulse technology and you get extremely high and sharp pulses.
I feel that not the highest voltage is important but if they do it this way you have very steep edges and that seems to be of invaluable.
These are basic hints only. Play with this parameters in order to transfer knowledge into your intuition.
2. My cap should be rated at 2000-4000 v, and a capacitance which should be low maybe .1 to 1 nf. This will not be the tuning cap value because its before the spark so i will need another cap (variable), to tune coil after spark, or will it go to natural res since after spark.
right.
- follow the different hints in this forum to tesla coilers. You need to tune your cap so in order to you get a spark every pulse out of your car coil.
- Another way was shown by Zilano. You rectify your HV and connect it through a resistor to your primary cap before spark gap. See Tesla coiler links for proper tuning with inductor instead resistor. But resistor is recommended for initial tinkering.
We have pelenty of building stones and plenty of useful combinations. Therefore we have no distinct instruction for just ONE replication.
Nobody knows all essential parameters and therefore most replications don't work. See recent discussion regarding conditioned capacitors. How many replications were totally correct - but did'n wait for conditioning?
I've got a 16 ga. 2 inch B & W coil, 10 turns per inch, 10 inch long, for my primary, about 57 ft. I was going to try to step down at res, using 10 ga. wire at 1/4 primary, wind my L2's at ends of L1 but opposite ( 2 coils, 10 ft each) . I see mr clean used uneven number turns for his secondaries.
Again: many building stones and many combinations.
I decided for Zilano three coil setup (still under construction). This is because we have in the middle a coil with many windings and as high voltage as you like while components at primary and last secondary are loaded with moderate voltage only. But I do not garantee not to change my mind. Experiments will decide.
Please take my hints as knowledge you have to explore. There are so many different parameters involved (some unknown). All components behave as community and not as individuals only. You need to get good friends with all of them.
Thanks
Thug
I look at that pdf I think hell its only 70 pages how hard can that be?
Well the answer is quite difficult, I cant help feeling it would be so much easier with no previous electrical training at all ! I'm sure then it would then be possible to simply read the work and believe it! instead of that the very foundations of classical teaching become a giant mill stone! 
Even the terms we all use confuse I was questioning “cold electricity” myself a page or two back why? Because it doesnt officially exsist it arrives with multiple names one mans radient energy is another mans cold electricity added to a multitude of other names..
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